DTSFab.com (Desert, Trail and Sand)
Machinery, Trailers, Toyhaulers and Motorhomes => Trailers, Toyhaulers and Motorhomes => Topic started by: dsrace on August 10, 2013, 05:53:21 PM
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found this statement on a tow site. can anyone confirm this?
"random fact- every 1,000ft above sea level you climb you lose 3% of your horse power with a naturally aspirated (non forced air induction) ie at 10,000ft you would lose 30% of your horse power..."
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found this statement on a tow site. can anyone confirm this?
"random fact- every 1,000ft above sea level you climb you lose 3% of your horse power with a naturally aspirated (non forced air induction) ie at 10,000ft you would lose 30% of your horse power..."
Yes. True statment. Air get lighter the higher you go. That's why at 5k feet you run rich.
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I would think with MAS and FAM equiped computer controlled engines, they can compinsate some. I have pulled thu Vail Co, over 10k high, wnd didn't notice much.
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I would think with MAS and FAM equiped computer controlled engines, they can compinsate some. I have pulled thu Vail Co, over 10k high, wnd didn't notice much.
I think what the original OP is saying is if this was a normally aspirated non computer car would do. Most all of the newer computer controlled cars this would not effect.
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I think what the original OP is saying is if this was a normally aspirated non computer car would do. Most all of the newer computer controlled cars this would not effect.
Oh, I thought he meant non-turbo/blower.
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EFI cars will altitude compensate by pulling fuel to maintain a good AFR as elevation increases. Old carbed cars cannot do that. You will however lose some HP due to loss of volumetric effeciency at higher altitudes even with EFI.If the thing can't take as deep a breath at altitude as at sea level it can't produce same hp as at sea level. Boosted engines will see very little hp difference at altitude unless the turbo or supercharger is undersized so much it can't maintain same boost at altitude as sea level..
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EFI cars will altitude compensate by pulling fuel to maintain a good AFR as elevation increases. Old carbed cars cannot do that. You will however lose some HP due to loss of volumetric effeciency at higher altitudes even with EFI.If the thing can't take as deep a breath at altitude as at sea level it can't produce same hp as at sea level. Boosted engines will see very little hp difference at altitude unless the turbo or supercharger is undersized so much it can't maintain same boost at altitude as sea level..
You say it so much nicer than I, and I forget to proof read my posts. ;D
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I ride motorcycles in Colorado a lot. You really notice the difference on a bike. At 12K' it feels like you have half the power you do at sea level. One of the few times I have wished for EFI on a bike. And maybe a turbo. One of the reasons I am contemplating a turbo for the Wing. Not so much for performance, but to keep sea level performance when it's over 2 miles high........
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I ride motorcycles in Colorado a lot. You really notice the difference on a bike. At 12K' it feels like you have half the power you do at sea level. One of the few times I have wished for EFI on a bike. And maybe a turbo. One of the reasons I am contemplating a turbo for the Wing. Not so much for performance, but to keep sea level performance when it's over 2 miles high........
I was talking to a friend that dirt bikes in CO and he said that the new FI dirt bikes do not compensate and you have to change the programing to make them run right up there. I can understand that dirt bikes wouldn't have all the sensors to compensate but it makes me wonder if all the new FI street machines and duals sports would compensate?
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What make bike is he running?